[FFmpeg-cvslog] avformat/subtitles: check lower bound for duration overlap seeking.

[Clément Bœsch]

ffmpeg | branch: release/1.2 | Clément Bœsch <u at pkh.me> | Sun Sep  8 09:55:02 2013 +0200| [6a782e20d7613f91f637630c3b9158f8c6e549c1] | committer: Clément Bœsch

avformat/subtitles: check lower bound for duration overlap seeking.

(cherry picked from commit 1ca4bf930bab681a79fb591330043675c7cfd798)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6a782e20d7613f91f637630c3b9158f8c6e549c1
---

 libavformat/subtitles.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/subtitles.c b/libavformat/subtitles.c
index e128bce..1634e3a 100644
--- a/libavformat/subtitles.c
+++ b/libavformat/subtitles.c
@@ -119,10 +119,11 @@ int ff_subtitles_queue_seek(FFDemuxSubtitlesQueue *q, AVFormatContext *s, int st
         /* look back in the latest subtitles for overlapping subtitles */
         ts_selected = q->subs[idx].pts;
         for (i = idx - 1; i >= 0; i--) {
+            int64_t pts = q->subs[i].pts;
             if (q->subs[i].duration <= 0 ||
                 (stream_index != -1 && q->subs[i].stream_index != stream_index))
                 continue;
-            if (q->subs[i].pts > ts_selected - q->subs[i].duration)
+            if (pts >= min_ts && pts > ts_selected - q->subs[i].duration)
                 idx = i;
             else
                 break;